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Montana Field Guide

Montana Field Guides

Creeping Ancylid - Ferrissia rivularis

Global Rank: G5
State Rank: SNR

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General Description
Ferrissia rivularis is a species of small freshwater snail or limpet, an aquatic gastropod mollusk in the family Planorbidae. They are small and conical shaped.

Summary of Observations Submitted for Montana
Number of Observations: 13

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)

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Citation for data on this website:
Creeping Ancylid — Ferrissia rivularis.  Montana Field Guide.  .  Retrieved on , from